A television orgriginally cost t dollars,including tax. Ricardo purchased the television when it was on sale for 35% off its original cost.Which of the following expressions represents the final cost, in dollars,of the television Ricardo purchased?

If there is a 35% off of the original cost of the television, it means that the cost of the tv is:
100% - 35% = 65%
it is a 65% of its original cost. This can be written algebraicaly as follow:
0.65t
where t is the original cost.